Tupac was for the people in the "hood" who use profanity and don't think or care to use proper English. This isn't glorifying the atrocities our people experience living in the ghetto.
Y'all know what the h3ll our people mean when the say N!gga. It's never been a negative connotation between the black people who use it. Stop playing moral police like it's the equivalent to the word with the hard "r". Tupac created a positive acronym:
Never Ignorant Getting Goals Accomplished - N.1.G.G.A